return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6H6 (Benzene)

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D6H 1A1g
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-231.805893
Energy at 298.15K-231.812151
HF Energy-230.778755
Nuclear repulsion energy203.179090
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1g 3209 3128        
2 A1g 1005 980        
3 A2g 1369 1335        
4 A2u 686 669        
5 B1u 3169 3090        
6 B1u 1011 985        
7 B2g 967 943        
8 B2g 675 658        
9 B2u 1328 1294        
10 B2u 1158 1129        
11 E1g 857 835        
11 E1g 857 835        
12 E1u 3199 3118        
12 E1u 3198 3118        
13 E1u 1507 1469        
13 E1u 1507 1469        
14 E1u 1054 1028        
14 E1u 1054 1027        
15 E2g 3181 3101        
15 E2g 3181 3101        
16 E2g 1637 1596        
16 E2g 1637 1596        
17 E2g 1191 1161        
17 E2g 1189 1159        
18 E2g 607 592        
18 E2g 607 592        
19 E2u 959 935        
19 E2u 959 935        
20 E2u 401 391        
20 E2u 401 391        

Unscaled Zero Point Vibrational Energy (zpe) 21878.8 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 21327.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVTZ
ABC
0.18959 0.18959 0.09480

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is D6h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.398 0.000
C2 1.210 0.699 0.000
C3 1.210 -0.699 0.000
C4 0.000 -1.398 0.000
C5 -1.210 -0.699 0.000
C6 -1.210 0.699 0.000
H7 0.000 2.481 0.000
H8 2.148 1.240 0.000
H9 2.148 -1.240 0.000
H10 0.000 -2.481 0.000
H11 -2.148 -1.240 0.000
H12 -2.148 1.240 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.39752.42062.79502.42061.39751.08322.15413.40203.87823.40202.1541
C21.39751.39752.42062.79502.42062.15411.08322.15413.40203.87823.4020
C32.42061.39751.39752.42062.79503.40202.15411.08322.15413.40203.8782
C42.79502.42061.39751.39752.42063.87823.40202.15411.08322.15413.4020
C52.42062.79502.42061.39751.39753.40203.87823.40202.15411.08322.1541
C61.39752.42062.79502.42061.39752.15413.40203.87823.40202.15411.0832
H71.08322.15413.40203.87823.40202.15412.48074.29674.96144.29672.4807
H82.15411.08322.15413.40203.87823.40202.48072.48074.29674.96144.2967
H93.40202.15411.08322.15413.40203.87824.29672.48072.48074.29674.9614
H103.87823.40202.15411.08322.15413.40204.96144.29672.48072.48074.2967
H113.40203.87823.40202.15411.08322.15414.29674.96144.29672.48072.4807
H122.15413.40203.87823.40202.15411.08322.48074.29674.96144.29672.4807

picture of Benzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.000 C1 C2 H8 120.000
C1 C6 C5 120.000 C1 C6 H12 120.000
C2 C1 C6 120.000 C2 C1 H7 120.000
C2 C3 C4 120.000 C2 C3 H9 120.000
C3 C2 H8 120.000 C3 C4 C5 120.000
C3 C4 H10 120.000 C4 C3 H9 120.000
C4 C5 C6 120.000 C4 C5 H11 120.000
C5 C4 H10 120.000 C5 C6 H12 120.000
C6 C1 H7 120.000 C6 C5 H11 120.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability